Swift AVFoundation Orientation

Back Camera VS. Device Orientation.swift

func deviceExifOrientationForBackCamera(_ deviceOrientation: UIDeviceOrientation = UIDevice.current.orientation) -> CGImagePropertyOrientation{
        switch deviceOrientation {
        case .portrait:
            return .right
        case .landscapeLeft:
            return .up
        case .landscapeRight:
            return .down
        default:
            return .right
        }
    }

Front Camera VS. Device.swift

func deviceExifOrientationForFrontCamera(_ deviceOrientation: UIDeviceOrientation = UIDevice.current.orientation) -> CGImagePropertyOrientation {
        switch deviceOrientation {
        case .portraitUpsideDown:
            return .rightMirrored
        case .landscapeLeft:
            return .downMirrored
        case .landscapeRight:
            return .upMirrored
        default:
            return .leftMirrored
        }
    }

gistfile1.swift

extension CGImagePropertyOrientation {
  init(isUsingFrontFacingCamera: Bool, deviceOrientation: UIDeviceOrientation = UIDevice.current.orientation) {
    switch deviceOrientation {
    case .portrait:
      self = .right
    case .portraitUpsideDown:
      self = .left
    case .landscapeLeft:
      self = isUsingFrontFacingCamera ? .down : .up
    case .landscapeRight:
      self = isUsingFrontFacingCamera ? .up : .down
    default:
      self = .right
    }
  }
}